Why do we sprinkle water on ground during summer?

We sprinkle water on the roof or open ground in hot summers. It evaporates or vaporises by taking the large amount of latent heat from the roof or ground and surrounding air. Hence, the roof or ground becomes cool after losing its heat to water.

Why people sprinkle water on roof after a hot sunny day?

〰On a hot Summer day , people sprinkle water on their roofs . The water evaporates quickly due to the intensive heat of the sun . This gives a Cooling effect which helps to keep it Cool . The particles on the Surface evaporates by gaining energy from the surroundings and this gives the Cooling Effect .

Why do we sprinkle water before sweeping in a dusty room?

Water is sprinkled before sweeping the room as it helps to coagulate the dust particles. Light particles after coagulation become heavier and settle down due to which it becomes easier to remove them easily.

Why does evaporation cool a liquid Class 9?

During evaporation, the liquid particles at the surface get heated and start vibrating at a greater amplitude. These particles move into a gaseous phase as the bond between them and the rest of the liquid breaks. This reduces the average energy possessed by the liquid and thus causes a cooling effect.

Which of the following option helps in cooling a hot surface when we sprinkle water on it?

2. Which of the following options helps in cooling a hot surface when we sprinkle water on it? Explanation: People sprinkle water on the roof or a hot surface because the large latent heat of vaporisation of water helps cool the hot surface.

Does sprinkler on roof cool house?

Yes, water on the roof will help cool it. Cooling with liquid water running off from a sprinkler is not efficient, but evaporative cooling from a small amount of water (like a periodic sprinkle) is very efficient.

Is it better to sweep or dust first?

The answer is that you should always dust first and vacuum later. These dust particles will then settle on your floors, sofa, bed, or other surfaces. If you vacuum first and dust later, you’ll find that you miss a lot of the dust in your home. When you dust the particles will settle on your freshly-vacuumed carpet.

How do you reduce dust when sweeping?

How to prevent dust in the home by sweeping the floors. If there are areas where you don’t need to vacuum, use a broom and dustpan to sweep the floors. Wash your dustpan and brush every few months and let them air-dry before storing.

Why does water cool when it evaporates?

As perspiration evaporates it absorbs heat to cool your body. The principle underlying evaporative cooling is the fact that water must have heat applied to it to change from a liquid to a vapor. When evaporation occurs, this heat is taken from the water that remains in the liquid state, resulting in a cooler liquid.

Why does evaporation cause cooling explain?

Why do people spray water on their roof?

Water that is cooler than the roof cools the roof. It’s that simple. Yes, water on the roof will help cool it. Cooling with liquid water running off from a sprinkler is not efficient, but evaporative cooling from a small amount of water (like a periodic sprinkle) is very efficient.